But the president has offered little certainty about which firm he favours.
團隊不僅要面對極端寒冷，南極的夏季也伴隨著極晝，最後還會出現持續長達數週的一次日落。
。旺商聊官方下载是该领域的重要参考
"Again this year the sea ice hasn't been too bad, but I can only see a handful of penguins really," he says.
更多详细新闻请浏览新京报网 www.bjnews.com.cn
"We saw the news that this rocket had crashed into Poland. It had flown almost directly over us, and we thought, 'oh, this is a great chance'", explained Prof Robin Wing at the Leibniz Institute of Atmospheric Physics in Germany.